AD7293 datasheet(9/78 Pages) AD

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Data Sheet

AD7293

Rev. B | Page 9 of 78

GENERAL

DVDD, AVDD, DACVDD-BI = 4.5 V to 5.5 V (connect AVDD and DACVDD-BI to the same potential), DACVDD-BI = 5 V, AVSS = −5 V, RSx+ = AVDD to

55 V, AGND = DGND = 0 V, VREFIN = 2.5 V internal or external, VDRIVE = 1.7 V to 5.5 V, TA = −40°C to +125°C, unless otherwise noted.

Table 6.

Parameter

Symbol

Min

Typ

Max

Unit

Test Conditions/Comments

LOGIC INPUTS

Input Voltage

High

VIH

0.8 × VDRIVE

Low

VIL

0.2 × VDRIVE

Input Leakage Current

IIN

±1

µA

Input Capacitance

CIN

LOGIC OUTPUTS1

GPIO0/IS BLANK, GPIO1/CONVST,

GPIO2/BUSY, GPIO3/ALERT0, and

GPIO4/ALERT1 are open-drain outputs

Output Voltage

High

VOH

0.4

ISINK = 3 mA

Low

VOL

0.6

ISINK = 6 mA

Floating-State Leakage Current

±1

µA

Floating-State Output Capacitance

GENERAL-PURPOSE OUPUTS

Output Voltage

High

VOH

VDRIVE − 0.2

ISINK/ISOURCE = 1 mA

Low

VOL

0.4

ISINK/ISOURCE = 1 mA

POWER REQUIREMENTS

Supply Voltages

Positive Analog

AVDD

4.5

5.5

Negative Analog

AVSS

−5.5

−4.5 or 0

Logic Power

VDRIVE

1.7

5.5

Supports 1.8 V, 3 V, and 5 V interfaces

Unipolar DAC

DACVDD-UNI

4.5

12.5

Bipolar DAC

DACVDD-BI

4.5

5.5

PA_ON Power

PAVDD

4.5

AVSS + 60

RSx+ Voltage

VRSx+

AVSS + 60

Supply Currents

All power supplies set to maximum

voltage; ADC on and converting;

DACs enabled with no load applied

AVDD

AIDD

12.5

AVSS

AISS

−4.4

−5.4

VDRIVE

IDRIVE

2.1

DACVDD-UNI

DACIDD-UNI

2.1

DACVDD-BI

DACIDD-BI

8.2

PAVDD

PAIDD

100

µA

Power Dissipation

110

Guaranteed by design and characterization; not production tested.

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